대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2005년도 추계종합학술대회
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- Pages.367-370
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- 2005
스케일 스페이스 특징점을 이용한 영상 워터마킹
Image Watermarking Based on Feature Points of Scale-Space Representation
- Seo, Jin-S. (Div. of EE, Dept. of EECS, Korea Advanced Institute of Science and Technology) ;
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Yoo, Chang-D.
(Div. of EE, Dept. of EECS, Korea Advanced Institute of Science and Technology)
- 발행 : 2005.11.26
초록
This paper proposes a novel method for content-based watermarking based on feature points of an image. At each feature point, watermark is embedded after affine normalization according to the local characteristic scale and orientation. The characteristic scale is the scale at which the normalized scale-space representation of an image attains a maximum value, and the characteristic orientation is the angle of the principal axis of an image. By binding watermarking with the local characteristics of an image, resilience against affine transformations can be obtained. Experimental results show that the proposed method is robust against various image processing steps including affine transformations, cropping, filtering, and JPEG compression.
키워드